postsrsd x86_64 a252c94a2ea2bf224bed2825c28e2796467e33e346115e08a80e7cb2f4673939 Postfix sender rewriting scheme daemon The Sender Rewriting Scheme (SRS) is a technique to forward mails from domains which deploy the Sender Policy Framework (SPF) to prohibit other Mail Transfer Agents (MTAs) from sending mails on their behalf. With SRS, an MTA can circumvent SPF restrictions by replacing the envelope sender with a temporary email address from one of their own domains. This temporary address is bound to the original sender and only valid for a certain amount of time, which prevents abuse by spammers. bero <bero@lindev.ch> https://github.com/roehling/postsrsd